Compilare: main.cpp: In function 'int findmin(std::vector<int>, std::vector<int>)': main.cpp:8:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 8 | for(int i=1;i<d.size();i++) | ~^~~~~~~~~ main.cpp: In function 'int main()': main.cpp:55:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 55 | for(i=0;i<adj[nod].size();i++) | ~^~~~~~~~~~~~~~~~ main.cpp: In function 'int findmin(std::vector<int>, std::vector<int>)': main.cpp:13:12: warning: 'nod' may be used uninitialized in this function [-Wmaybe-uninitialized] 13 | return nod; | ^~~ main.cpp: In function 'int main()': main.cpp:58:31: warning: 'nod' may be used uninitialized in this function [-Wmaybe-uninitialized] 58 | t[adj[nod][i]]=nod;